diff --git a/web/src/lib/components/phases/PhaseChart.svelte b/web/src/lib/components/phases/PhaseChart.svelte
new file mode 100644
index 00000000..8da0c61d
--- /dev/null
+++ b/web/src/lib/components/phases/PhaseChart.svelte
@@ -0,0 +1,251 @@
+<script lang="ts">
+	import type { Item } from '$lib/types';
+	import { parseFields } from '$lib/types';
+
+	interface Props {
+		tasks: Item[];
+		startDate: string;
+		endDate?: string;
+	}
+
+	let { tasks, startDate, endDate }: Props = $props();
+
+	// Chart dimensions
+	const padding = { top: 20, right: 20, bottom: 30, left: 40 };
+	const width = 600;
+	const height = 200;
+	const chartW = width - padding.left - padding.right;
+	const chartH = height - padding.top - padding.bottom;
+
+	let chartData = $derived.by(() => {
+		const total = tasks.length;
+		if (total === 0) return null;
+
+		const start = new Date(startDate);
+		start.setHours(0, 0, 0, 0);
+
+		const now = new Date();
+		now.setHours(23, 59, 59, 999);
+
+		const end = endDate ? new Date(endDate) : now;
+		end.setHours(23, 59, 59, 999);
+
+		// Use the later of end date or today for display range
+		const displayEnd = end > now ? end : now;
+		const totalMs = displayEnd.getTime() - start.getTime();
+		if (totalMs <= 0) return null;
+
+		// Build completion events: when each done task was completed
+		const completions: { date: Date; count: number }[] = [];
+		for (const task of tasks) {
+			const f = parseFields(task);
+			if (f.status === 'done') {
+				const completedAt = new Date(task.updated_at);
+				completions.push({ date: completedAt, count: 1 });
+			}
+		}
+		completions.sort((a, b) => a.date.getTime() - b.date.getTime());
+
+		// Build actual line points (step chart)
+		const actualPoints: { x: number; y: number }[] = [];
+		let remaining = total;
+
+		// Start point
+		actualPoints.push({
+			x: 0,
+			y: (remaining / total) * chartH
+		});
+
+		for (const c of completions) {
+			const xPct = (c.date.getTime() - start.getTime()) / totalMs;
+			const x = Math.max(0, Math.min(chartW, xPct * chartW));
+
+			// Horizontal step to this date at current remaining level
+			actualPoints.push({ x, y: (remaining / total) * chartH });
+
+			remaining -= c.count;
+
+			// Vertical drop to new remaining level
+			actualPoints.push({ x, y: (remaining / total) * chartH });
+		}
+
+		// Extend to today (or end, whichever is shown)
+		const nowX = Math.max(0, Math.min(chartW, ((now.getTime() - start.getTime()) / totalMs) * chartW));
+		actualPoints.push({ x: nowX, y: (remaining / total) * chartH });
+
+		// Ideal line: straight from (start, total) to (end, 0)
+		const idealEndX = Math.max(0, Math.min(chartW, ((end.getTime() - start.getTime()) / totalMs) * chartW));
+		const idealLine = {
+			x1: 0,
+			y1: 0,
+			x2: idealEndX,
+			y2: chartH
+		};
+
+		// Today marker
+		const todayX = ((now.getTime() - start.getTime()) / totalMs) * chartW;
+
+		// Y axis ticks
+		const yTicks: { value: number; y: number }[] = [];
+		const step = total <= 5 ? 1 : total <= 20 ? Math.ceil(total / 5) : Math.ceil(total / 4);
+		for (let v = 0; v <= total; v += step) {
+			yTicks.push({ value: v, y: ((total - v) / total) * chartH });
+		}
+		if (yTicks[yTicks.length - 1]?.value !== total) {
+			yTicks.push({ value: total, y: 0 });
+		}
+
+		// X axis labels
+		const formatDate = (d: Date) => {
+			return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric' });
+		};
+
+		// Build the actual line SVG path
+		const actualPath = actualPoints
+			.map((p, i) => `${i === 0 ? 'M' : 'L'}${p.x},${p.y}`)
+			.join(' ');
+
+		// Build filled area path (close to bottom)
+		const areaPath =
+			actualPath +
+			` L${actualPoints[actualPoints.length - 1].x},${chartH} L0,${chartH} Z`;
+
+		return {
+			total,
+			remaining,
+			actualPath,
+			areaPath,
+			idealLine,
+			todayX,
+			yTicks,
+			startLabel: formatDate(start),
+			endLabel: formatDate(end),
+			showTodayMarker: todayX > 0 && todayX < chartW
+		};
+	});
+</script>
+
+{#if chartData}
+	<div class="phase-chart">
+		<svg viewBox="0 0 {width} {height}" preserveAspectRatio="xMidYMid meet">
+			<g transform="translate({padding.left},{padding.top})">
+				<!-- Y axis gridlines -->
+				{#each chartData.yTicks as tick (tick.value)}
+					<line
+						x1={0}
+						y1={tick.y}
+						x2={chartW}
+						y2={tick.y}
+						stroke="var(--border)"
+						stroke-width="0.5"
+					/>
+					<text
+						x={-8}
+						y={tick.y}
+						text-anchor="end"
+						dominant-baseline="middle"
+						fill="var(--text-muted)"
+						font-size="11"
+					>
+						{tick.value}
+					</text>
+				{/each}
+
+				<!-- Ideal line (dashed, gray) -->
+				<line
+					x1={chartData.idealLine.x1}
+					y1={chartData.idealLine.y1}
+					x2={chartData.idealLine.x2}
+					y2={chartData.idealLine.y2}
+					stroke="var(--text-muted)"
+					stroke-width="1.5"
+					stroke-dasharray="6 4"
+					opacity="0.6"
+				/>
+
+				<!-- Actual area fill -->
+				<path
+					d={chartData.areaPath}
+					fill="var(--accent-green)"
+					opacity="0.1"
+				/>
+
+				<!-- Actual line -->
+				<path
+					d={chartData.actualPath}
+					fill="none"
+					stroke="var(--accent-green)"
+					stroke-width="2"
+					stroke-linejoin="round"
+				/>
+
+				<!-- Today marker -->
+				{#if chartData.showTodayMarker}
+					<line
+						x1={chartData.todayX}
+						y1={0}
+						x2={chartData.todayX}
+						y2={chartH}
+						stroke="var(--accent-blue)"
+						stroke-width="1"
+						stroke-dasharray="4 3"
+						opacity="0.7"
+					/>
+					<text
+						x={chartData.todayX}
+						y={-6}
+						text-anchor="middle"
+						fill="var(--accent-blue)"
+						font-size="10"
+						opacity="0.8"
+					>
+						today
+					</text>
+				{/if}
+
+				<!-- X axis: baseline -->
+				<line
+					x1={0}
+					y1={chartH}
+					x2={chartW}
+					y2={chartH}
+					stroke="var(--border)"
+					stroke-width="1"
+				/>
+
+				<!-- X axis labels -->
+				<text
+					x={0}
+					y={chartH + 18}
+					text-anchor="start"
+					fill="var(--text-muted)"
+					font-size="11"
+				>
+					{chartData.startLabel}
+				</text>
+				<text
+					x={chartW}
+					y={chartH + 18}
+					text-anchor="end"
+					fill="var(--text-muted)"
+					font-size="11"
+				>
+					{chartData.endLabel}
+				</text>
+			</g>
+		</svg>
+	</div>
+{/if}
+
+<style>
+	.phase-chart {
+		width: 100%;
+		margin: var(--space-3) 0;
+	}
+
+	.phase-chart svg {
+		width: 100%;
+		height: 200px;
+		display: block;
+	}
+</style>
diff --git a/web/src/lib/components/phases/PhaseTasks.svelte b/web/src/lib/components/phases/PhaseTasks.svelte
index e11edc99..66ffeafc 100644
--- a/web/src/lib/components/phases/PhaseTasks.svelte
+++ b/web/src/lib/components/phases/PhaseTasks.svelte
@@ -5,14 +5,16 @@
 	import { parseFields, formatItemRef } from '$lib/types';
 	import { dndzone, TRIGGERS, SHADOW_ITEM_MARKER_PROPERTY_NAME } from 'svelte-dnd-action';
 	import type { DndEvent } from 'svelte-dnd-action';
+	import PhaseChart from './PhaseChart.svelte';
 
 	interface Props {
 		wsSlug: string;
 		itemSlug: string;
 		itemId: string;
+		phaseFields?: Record<string, any>;
 	}
 
-	let { wsSlug, itemSlug, itemId }: Props = $props();
+	let { wsSlug, itemSlug, itemId, phaseFields }: Props = $props();
 
 	let tasks = $state<Item[]>([]);
 	let loading = $state(true);
@@ -123,6 +125,10 @@
 		<div class="progress-fill" style:width="{percentage}%"></div>
 	</div>
 
+	{#if !loading && tasks.length > 0 && phaseFields?.start_date}
+		<PhaseChart {tasks} startDate={phaseFields.start_date} endDate={phaseFields.end_date} />
+	{/if}
+
 	{#if loading}
 		<div class="loading">
 			<span class="spinner"></span>
diff --git a/web/src/routes/[workspace]/[collection]/[slug]/+page.svelte b/web/src/routes/[workspace]/[collection]/[slug]/+page.svelte
index fcf63b3a..80d00448 100644
--- a/web/src/routes/[workspace]/[collection]/[slug]/+page.svelte
+++ b/web/src/routes/[workspace]/[collection]/[slug]/+page.svelte
@@ -454,7 +454,7 @@
 
 		<!-- Phase Tasks (shown only for phases collection) -->
 		{#if collSlug === 'phases' && item}
-			<PhaseTasks {wsSlug} {itemSlug} itemId={item.id} />
+			<PhaseTasks {wsSlug} {itemSlug} itemId={item.id} phaseFields={fields} />
 		{/if}
 
 		<!-- Comments -->